2204 | 0.8 | 2.7 | 2.58 | 5.28 | 442 | 171 | 323 | 0.51 |
2265 | 1.8 | 3.91 | 2.88 | 6.79 | 441 | 158 | 160 | 0.58 |
2320 | 1.5 | 3.70 | 2.40 | 6.10 | 439 | 156 | 150 | 0.61 |
2355 | 0.8 | 2.56 | 1.45 | 4.01 | 466 | 129 | 181 | 0.64 |
2375 | 0.7 | 6.52 | 3.28 | 9.80 | 455 | 557 | 469 | 0.67 |
2415 | 1.1 | 4.14 | 2.03 | 6.17 | 476 | 177 | 185 | 0.67 |
2510 | 0.9 | 1.60 | 0.83 | 2.43 | 469 | 17 | 92 | 0.66 |
2520 | 1.0 | 5.03 | 2.18 | 7.21 | 478 | 353 | 218 | 0.7 |
2557 | 0.8 | 2.53 | 1.21 | 3.74 | 480 | 116 | 151 | 0.88 |
Overburden | 0–28 | 28 | 0.2–0 | |||
Mio-Oligocene (Coastal plain sands) | 28–584 | 556 | 27–0.2 | |||
Oligocene shaly sands | 584–1328 | 744 | 28–27 | |||
Upper Eocene (Bende/Ameki Formation) | 1328–1426 | 98 | 37.6–34 | 34–28 | ||
Mid-Eocene (Bende/Ameki Formation) | 1426–1862 | 436 | 41.2–39 | 39–37.6 | ||
Lower Eocene (Bende/Ameki Formation) | 1862–2655 | 793 | 49–41.2 | 1 | 214 | |
Lower Eocene (Bende/Ameki Formation) | 2655–2710 | 55 | 54–49 | |||
Lower Eocene (Bende/Ameki Formation) | 2710–2863 | 153 | 56–54 | |||
Palaeocene (Imo Shale) | 2863–3228 | 365 | 66–56 | |||
Maastrichtian (Nkporo Shale) | 3228–3450 | 222 | 71.2–66 |
Ihuo-1 | 2204 | 0.80 |
Ihuo-1 | 2265 | 0.78 |
Ihuo-1 | 2375 | 1.03 |
Ihuo-1 | 2557 | 1.48 |